Results 31 to 40 of about 1,744 (163)

Spectral enclosures for the damped elastic wave equation

open access: yes, 2021
In this paper we investigate spectral properties of the damped elastic wave equation. Deducing a correspondence between the eigenvalue problem of this model and the one of Lamé operators with non self-adjoint perturbations, we provide quantitative bounds
Cossetti L.   +5 more
core   +1 more source

Consideration of Spatially Infinite Loads in the Problem for a Layer with a Cylindrical Cavity and Continuous Supports

open access: yesComputation
An analytical method is proposed for determining the stress-strain state in an elastic layer with a cylindrical cavity supported by linear continuous supports perpendicular to the cavity.
Nataliia Ukrayinets   +6 more
doaj   +1 more source

Determination of One Unknown Thermal Coefficient through the One-Phase Fractional Lamé-Clapeyron-Stefan Problem [PDF]

open access: yes, 2015
We obtain explicit expressions for one unknown thermal coefficient (among the conductivity, mass density, specific heat and latent heat of fusion) of a semi-infinite material through the one-phase fractional Lamé-Clapeyron-Stefan problem with an over ...
Tarzia, Domingo Alberto
core   +1 more source

A Linear Elasticity Theory to Analyze the Stress State of an Infinite Layer with a Cylindrical Cavity under Periodic Load

open access: yesComputation, 2022
The design of parts of machines, mechanisms, structures and foundations, particularly in the aerospace industry, is closely related to the definition of the stress state of the body.
Vitaly Miroshnikov   +3 more
doaj   +1 more source

An Exterior Neumann Boundary-Value Problem for the Div-Curl System and Applications

open access: yesMathematics, 2021
We investigate a generalization of the equation curlw→=g→ to an arbitrary number n of dimensions, which is based on the well-known Moisil–Teodorescu differential operator.
Briceyda B. Delgado   +1 more
doaj   +1 more source

Equation error approach for elliptic inverse problems with an application to the identification of Lamé parameters

open access: yes, 2008
The method of equation error can be posed and analyzed in an abstract setting that encompasses a variety of elliptic inverse problems, in which a coefficient in an elliptic partial differential equation is to be estimated from a measurement of the ...
Gockenbach, Mark   +2 more
core   +1 more source

Eigenvalue Problems for Lamé's Differential Equation

open access: yes, 2018
The Floquet eigenvalue problem and a generalized form of the Wangerin eigenvalue problem for Lamé's differential equation are discussed. Results include comparison theorems for eigenvalues and analytic continuation, zeros, and limiting cases of ...
Volkmer, H.
core   +1 more source

Generalized Ellipsoidal and Sphero-Conal Harmonics

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2006
Classical ellipsoidal and sphero-conal harmonics are polynomial solutions of the Laplace equation that can be expressed in terms of Lamé polynomials. Generalized ellipsoidal and sphero-conal harmonics are polynomial solutions of the more general Dunkl ...
Hans Volkmer
doaj  

MODEL OF STRATIFIED LUBRICATION OF ELASTICALLY DEFORMED RADIAL BEARING

open access: yesAdvanced Engineering Research, 2014
On the basis of the Navier-Stokes equations for the case of a ‘thin layer’, the continuity equation, Lame equations, and Darcy equation, considering the boundary conditions on the pin and bearing face at the layer interface, a method of generating an ...
Sergey Vladimirovich Mitrofanov   +1 more
doaj   +1 more source

Behavior of the energy for Lame systems in bounded domains with nonlinear damping and external force

open access: yesElectronic Journal of Differential Equations, 2013
We study behavior of the energy for solutions to a Lame system on a bounded domain, with localized nonlinear damping and external force. The equation is set up in three dimensions and under a microlocal geometric condition.
Ahmed Bchatnia, Moez Daoulatli
doaj  

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